To get UUID of the partition /dev/sdc3, run: blkid /dev/sdxx You might use it to create /etc/fstab entry for this drive, if you can expect that it might get different letters of drive (for example it is USB drive)

Want to be sure new drive is fine (has no badblocks?) Run badblocks -wvs /dev/sdx (might take ~50 hours on 3TB HDD). It will write down specific patterns on HDD, verifying them (four different patterns for whole drive). It will wipe out your data on sdX

Underscores are not valid characters in hostnames. If you have configured your DHCP server to register hostnames in DDNS, following issue may occur: some windows hostnames may contain “_” in their names. If you do so, following error will be logged by bind: zone zone.name/IN: computer_4.zone.name/A: bad owner name (check-names) and in logs from isc ...